Bathtub overlay

ABSTRACT

In accordance with one embodiment, a method is disclosed including cutting an opening in a sidewall of a bathtub and providing an overlay to cover the bathtub. The overlay can include an assistance feature such a tread, door, or capsule.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application is a continuation of co-pending application Ser. No.13/466,623, filed May 8, 2012, which is a continuation-in-partapplication of application Ser. No. 12/975,288, filed Dec. 21, 2010,entitled “Bathtub Overlay”, which is a continuation-in-part applicationof application Ser. No. 12/792,817, filed Jun. 3, 2010, entitled“Retrofit Tub Overlay”, which is a continuation application ofapplication Ser. No. 12/713,437, filed Feb. 26, 2010, which claimspriority from the disclosure of U.S. Provisional Patent Application Ser.No. 61/155,640, entitled “Retrofit Bathtub Door,” filed Feb. 26, 2009,the disclosures of which are all hereby expressly incorporated byreference herein in their entirety.

FIELD

Embodiments shown herein relate, in general, to a bathtub overlay, and,in particular, to a bathtub overlay having an access opening.

BACKGROUND

Traditional bathtubs may have high sidewalls, referred to as tub aprons,which allow a bathtub to hold a large volume of water. Many individuals,particularly the elderly and those suffering from arthritis,debilitating injury, handicap, and/or general loss of mobility, may havetrouble accessing a bathtub area due to the high step that is typicallyrequired to step into and out of a bathtub. For such persons, thesidewall of a bathtub may be an insurmountable hurdle. Even with theassistance of a health aide, many individuals may not be capable ofsafely stepping over the sidewall of a bathtub and into the bathtub totake a bath or shower. Consequently, these persons may forego taking abath or shower altogether and settle for alternate bathing methods, suchas sponge baths and the like. Many people, however, may not find suchalternative bathing methods satisfactory.

SUMMARY

In accordance with one embodiment, a method is disclosed includingproviding a first opening in a sidewall of a bathtub, the sidewallincluding a top wall, an inner wall, and a outer wall, where the firstopening extends along a length of the sidewall and has a depth extendinggenerally downward from the top wall of the sidewall. The method furtherincludes providing an overlay including an assistance feature, theoverlay including a body configured to receive at least a portion of thebathtub, wherein the body defines a channel and a second opening andpositioning the overlay such that the overlay substantially covers thetop wall of the sidewall and the sidewall is positioned within thechannel defined by the body of the overlay, where the first opening isaligned with the second opening.

In an alternate version, a method is disclosed including providing a tubliner having a body, a channel defined by the body, and a first openingdefined by the body, where the channel of the tub liner is configuredfor placement over the sidewall of a bathtub having a second openingformed therein, and positioning the body of the tub liner over thesidewall of the bathtub such that the first opening of the tub liner isaligned with the second opening of the sidewall of the bathtub.

In accordance with one embodiment, a bathtub overlay is disclosed havingan assistance feature and a body, the body being configured forplacement over an existing bathtub, the body including a sidewall, thesidewall defining a channel and an opening, and a bottom wall integralwith the sidewall, the bottom wall and the sidewall cooperating todefine a cavity, where the cavity is in communication with the openingto facilitate the ingress and egress of a bather into the cavity. Thebathtub overlay further includes an assistance feature in communicationwith the body.

BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying drawings incorporated in and forming a part of thespecification illustrate several aspects of the embodimentscontemplated, and together with the description serve to explain theprinciples of the embodiments; it being understood, however, that thedescribed embodiments are not limited to the precise arrangements shown.In the drawings, like reference numerals refer to like elements in theseveral views. In the drawings:

FIG. 1 is an isometric view of a bathtub insert according to oneembodiment.

FIG. 2 is a rear view of the bathtub insert shown in FIG. 1.

FIG. 3 is a side view of the bathtub insert shown in FIG. 1.

FIG. 4 is a top view of the bathtub insert shown in FIG. 1.

FIG. 5 is an isometric view of an alternate embodiment of a bathtubinsert.

FIG. 6 is a side view of the bathtub insert shown in FIG. 5.

FIG. 7 is an isometric view of the bathtub insert shown in FIG. 5 havinga handle.

FIG. 8 is a more detailed partial view of the handle of the bathtubinsert shown in FIG. 5.

FIG. 9 is an isometric view of the bathtub insert shown in FIG. 5.

FIG. 10 is a top view of the bathtub insert shown in FIG. 5.

FIG. 11 is an isometric view of an alternate embodiment of a bathtubinsert.

FIG. 12 is an exploded view of one embodiment of a support structure fora bathtub insert.

FIG. 13 is a front view of the assembled support structure for thebathtub insert shown in FIG. 12.

FIG. 14 is an isometric view of the bathtub insert shown in FIG. 5.

FIG. 15 is an isometric view of the bathtub insert shown in FIG. 5.

FIG. 16 is an isometric view of an alternate embodiment of a bathtubinsert.

FIG. 17 is an isometric view of the bathtub insert shown in FIG. 16.

FIG. 18 is an isometric view of one embodiment of a door and handleassembly for a bathtub insert.

FIG. 19 is a rear view of the door of FIG. 18 shown with magnetspositioned along the periphery of the insert door.

FIG. 20 is an exploded view of one embodiment of a bathtub insert, asupport structure for the bathtub insert, and a retrofit covering.

FIG. 21 is a front view of the assembled support structure, bathtubinsert, and retrofit covering shown in FIG. 20.

FIG. 22 is a side view of the retrofit covering of FIG. 20 shown priorto placement over the bathtub insert.

FIG. 23 is an exploded view of one embodiment of an overlay configuredfor placement over a bathtub.

FIG. 24 is an exploded view of an alternate embodiment of an overlayhaving a door configured for placement over a bathtub.

FIG. 25 is a perspective view of one embodiment of a bathtub positionedadjacent two walls of a bathroom.

FIG. 26 is a perspective view of one embodiment of an overlay configuredfor placement over the bathtub shown in FIG. 25.

FIG. 27 is an exploded view of one embodiment of an overlay having anassistance feature, the overlay configured for placement over a bathtub.

FIG. 28 is a cross-sectional view of the overlay positioned over thebathtub of FIG. 27 taken along the longitudinal axis.

FIG. 29 is a cross-sectional view taken along the longitudinal axis ofan overlay that includes integral structural support.

FIG. 30 is a cross-sectional view taken along the longitudinal axis ofanother embodiment of an overlay that includes integral structuralsupport.

FIG. 31 is perspective view of an overlay having an assistance feature.

FIG. 32 is a top view of the overlay of FIG. 31.

FIG. 33 is a cross-sectional view of the overlay of FIG. 32 taken alongline 33-33.

FIG. 34 is a perspective view of an overlay having an integrated grabbar.

FIG. 35 is a perspective view of an overlay having an integrated grabbar.

FIG. 36 is an exploded view of an overlay having an assistance featureand a bathtub.

FIG. 37 is a perspective view of an overlay having an assistancefeature.

FIG. 38 is a perspective view of an overlay having an assistancefeature.

DETAILED DESCRIPTION

Versions of a bathtub insert or overlay described herein include aproduct and process that may improve access to a bathtub. In oneversion, an insert or overlay may be placed in or over a cutout sectionof an exposed wall of a bathtub. This insert, when properly positionedin the cutout section of the tub wall, may effectively lower the tubwall to permit easy access to the interior of the tub for those who arephysically challenged by the height of the wall of a typical bathtub. Inan alternate version, an existing bathtub may be retrofitted by cuttingand removing a section of the existing sidewall and adding a generallyU-shaped structure featuring an operational, watertight, and sealabledoor. Such a door may allow for easy access to the interior of thebathtub while providing the ability to continue to utilize the bathtubfor a shower or full bath. The surface of the U-shaped structure,step-saddle, or framed insert may feature a skid-resistant tread plateon its top surface to help prevent a user from slipping and/or falling.

Referring to FIG. 1, one version of a bathtub insert 20 is shown.Bathtub insert 20 may include a U-shaped box frame with a hinged doorattached to the frame. For example, FIG. 1 shows bathtub insert 20 ascomprising a step-saddle 22, or frame, and a door 24. Step-saddle 22 mayfurther include a step-plate 26 and an end-plate 28. FIG. 1 shows, forexample, step-saddle 22 as comprising a pair of end-plates 28.Step-plate 26 may be stepped over or upon by a user to gain access tothe interior or exterior of a bathtub. End-plates 28 may originate atthe ends of step-plate 26 and extend upwards from and perpendicular tothe step-plate 26 and generally parallel to each other. End-plates 28may define the ends of bathtub insert 20 and cover the sides of theU-shaped opening cut in the sidewall of the bathtub.

In one version, bathtub insert 20 may be retrofitted to an existingbathtub, where the dimensions of the bathtub insert 20 are configured tocover all of the cut lines from the removal of a portion of the bathtub.The bathtub insert 20 may be sized such that the removed portion of thebathtub need not have precise dimensions with tight tolerances. Bathtubinsert 20 may effectively seal the cutout portion of the tub even if thecutout does not, for example, have the exact dimensions suggested forthe installation. Bathtub insert 20 may be configured from any suitablematerial as will be apparent to one of ordinary skill in the art. Forexample, bathtub insert 20 may be made of a polymer, such as apolyethylene. The bathtub insert 20 may be fabricated using a rotationalmolding process or any other suitable method of fabrication.

Referring to FIG. 2, bathtub insert 20 may also include a door 24. Inone version, the door 24 is watertight and is configured to allow easyaccess to the inside of a tub while allowing the tub to fully functionas a bath when the door 24 is in the closed position. The door 24 may beconfigured from any suitable material as will be apparent to one ofordinary skill in the art such as a polymer, polyethylene, metal,stainless steel, ceramic, composite material, and/or glass. Door 24 mayinclude a solid sheet of material or a plurality of sheets of material.

Versions of the door 24 may have any suitable construction or structureas will be apparent to one of ordinary skill in the art. For example,door 24 may include a single panel or a plurality of panels. Multi-panelversions of the door 24 may include an accordion configuration of aplurality of integral panels, two generally equally sized doors thatmeet towards the center of the bathtub insert 20 and swing inwardly,telescoping panels, and the like. For example, bathtub insert 20 mayinclude two doors (not pictured) that latch together in the middle. Inanother example, bathtub insert 20 may include two doors that functionin a similar fashion to saloon doors, wherein one door may be closed andsecured within a channel formed in step-saddle 22 and the second doormay be closed and secured within another channel formed in step-saddle22 with a latch, seal, or magnet.

The door 24 may include an accessory such as, for example, a latch,magnet, snap, or other mechanism for locking or securing the door,multiple panels of a door, selected panels of the door, or the like. Itwill be appreciated that any suitable configuration of latch, connector,or adhesive is contemplated. An accessory, such as a latch, magnet,snap, etc., may be fabricated along with door 24 such that the door andaccessory may be considered an all-in-one system or integral.Alternatively, an accessory may be attached to door 24 after the door isfabricated. For example, a latch may be attached to door 24 after thedoor is fabricated.

In an alternate version, the door 24 may be secured within a groovearound the internal perimeter of the bathtub insert, where a removablecomponent is lowered into the groove or channel to seal the tub.

In an alternate version, a door, blocking member, or capsule may belowered into the opening of the bathtub insert 20 and/or over thebathtub insert 20 to effectively seal off the opening in the bathtubinsert 20. The door, blocking member, or covering may be a solidmaterial that, after a bather has entered the tub, is placed over thetop of the bathtub insert 20 to provide a complete seal of the tub. Forexample, door 24 may lay horizontally within the generally U-shapedopening in step-saddle 22. In this version, the door or blocking membermay completely fill the void in step-saddle 22. This door or blockingmember may be affixed to the inside of the insert opening in anysuitable manner such as, for example, with a magnet, seal, or both. Inanother version, a capsule or covering may cover the entire bathtubinsert 20. The capsule or covering may be hinged or be a retrofitcomponent that is placed over the top of the bathtub insert 20 to fullyor partially obstruct the space in the insert. Any suitable connector orseal may be located around all or a portion of bathtub insert 20 tofacilitate attachment of a door, blocking member, capsule, covering, orthe like.

In one version (not shown), the door 24 is fastened with a hinge suchthat door 24, when in a closed position, fits horizontally over thegenerally U-shaped opening in step-saddle 22. In this version, door 24may be opened by pulling up on the door. In another version, door 24 maybe opened by removing the door from bathtub insert 20 completely. Forexample, bathtub insert 20 may not include a hinge 30, the interiorand/or exterior of door 24 may include a plurality of magnets, andstep-saddle 22 may include a plurality of corresponding magnets orstrike plates or a recessed groove or channel. In this way, door 24 maybe closed by pressing the magnetized door into place to seal thegenerally U-shaped opening in the step-saddle 22. Correspondingly, door24 may be opened by pulling door 24 with sufficient force to overcomethe magnets or to pull the seal out of the groove. In another example,one side of door 24 may be magnetic, while the other side is not.

Referring to FIG. 2, door 24 may be affixed to the U-shaped frame via ahinge 30. FIG. 2 shows, for example, a pair of hinges 30 that attachdoor 24 to step-saddle 22. Hinge 30 may be affixed to step-saddle 22 inany suitable manner as will be apparent to one of ordinary skill in theart. For example, hinge 30 may be fastened into step-saddle 22 with ascrew or other fastener. In this way, door 24 may be in an open orclosed position. FIG. 1 shows door 24 in an open position. Hinges 30 maybe affixed to the door 24, to the step-saddle 22, to the top of thestep-saddle, and/or may have any other suitable placement orconfiguration.

Referring to FIG. 3, the inner surface of door 24 may include a magnet40. FIG. 3 shows, for example, a pair of magnets 40. Magnets 40 may bondto a strike plate (not pictured in FIG. 3) mounted on or withinstep-saddle 22. Magnets 40 may provide a watertight seal for door 24against step-saddle 22. Alternatively or in addition to a magnet, door24 may be secured in any other suitable manner as will be apparent toone of ordinary skill in the art. For example, door 24 may be securedwith a sealant, seal, adhesive, buffer, or the like.

FIG. 4 shows one version of the door 24 in an open position. In thisembodiment, the door 24 is closed by positioning it within a recess 50.Recess 50 may be integrally formed as part of step-saddle 22, and mayprovide a cavity dimensioned to accept the door 24, such that when door24 is positioned in recess 50, door 24 is flush with step-saddle 22.Referring to FIG. 5, the inner surface of door 24 may also include aseal 52 configured within a channel that, when door 24 is in a closedposition, may be compressed tightly against recess 50 of step-saddle 22to provide a watertight seal. Seal 52 and a corresponding channel may bepositioned at any suitable location on door 24 as will be apparent toone of ordinary skill in the art. For example, as shown in FIGS. 6-8,seal 52 may be generally located on the edges of door 24. In anotherexample, seal 52 may be positioned on door 24 to correspond with theposition of recess 50 on step-saddle 22. In another example, seal 52 maybe located within recess 50 to correspond with the position of door 24.Seals may be placed on the surface of the door 24 such that the sealsengage one another when the door is in the closed position or, in analternative version, the seals may be offset. The one or a plurality ofseals 52 may be configured from any suitable material as will beapparent to one of ordinary skill in the art. For example, seal 52 maybe made of a hydrophobic polymer. Any suitable number of seals iscontemplated where, for example, there may be a seal mounted on door 24as well as within recess 50 that compress tightly against each otherwhen the door is in a closed position. Alternatively, the seals may besituated adjacent to each other when the door is in the closed position,such that they compress against alternate surfaces. In addition, seal 52may be magnetized. For example, magnets may be incorporated into thecore center of a seal 52. Referring to FIGS. 9-10, seal 52 may belocated on door 24 in such a position so as to correspond to the shapeof recess 50 on step-saddle 22. In this way, when door 24 is in a closedposition, seal 52 may be compressed so as to form a watertight barrier.In another embodiment, seal 52 may be located on step-saddle 22. Forexample, seal 52 may be located in recess 50. In this way, when door 24is in a closed position, seal 52 may be compressed so as to form awatertight barrier.

Referring to FIG. 11, another version of a bathtub insert 20 is shown.By way of example only, the bathtub insert 20 may be installed inaccordance with methods described in U.S. Pat. No. 6,272,698, toStafford, which is hereby incorporated by reference in its entirety.Although not required, the installation process may include applying atemplate to a bathtub and cutting a generally U-shaped section out ofthe existing sidewall of the bathtub. Referring to FIGS. 12-13, bathtubinsert 20 may also include an adjustable housing 54 and a supporthousing 56 as will be described in more detail herein. Once the sectionof the bathtub has been cut and removed, a support structure comprisingtwo generally rectangular housings may be sized and fit into the openchannel extending from the floor to the bottom of bathtub insert 20.These housings may provide support for bathtub insert 20. In analternate version (not shown), a support system may be implemented thatincludes a plurality of supporting members that extend from the floor tothe bottom or underside of step-plate 26. The supporting members of asupport system may be secured to the floor and to the bottom orunderside of step-plate 26 in any suitable manner such as, for example,with a sealant or with a fastener. The supporting members may beconfigured from wood, polymer, plastic, ceramic, metal, or any othersuitable material.

In an alternate version (not shown), support bracing for the bathtubinsert 20 may be affixed to or otherwise mounted directly on a bathtub.For example, support bracing may be affixed to a sidewall of thebathtub. Such support bracing may be affixed to the bathtub in anysuitable manner as will be apparent to one of ordinary skill in the art.For example, support bracing may be adhered to or screwed into a wall ofthe bathtub. Support bracing may also be made of any suitable material,such as metal support bracing. Support bracing may be expandable, likean accordion, to fit the dimensions of a given bathtub and/or cutoutportion of the bathtub. In still another version (not shown), supportfor a bathtub insert 20 may be built into the underside of step-plate 26such that the support bracing is integral with the step-plate 26. Suchsupport bracing may extend from the underside of step-plate 26 to thefloor in, for example, a telescoping configuration. Support bracing maybe adjustable to fit the width and/or depth of a given bathtub. Thesupport bracing may have pre-set holes into which tangs on acorresponding brace member fit to correctly size the support structure.

The adjustable housing 54 may be, for example, a rectangular box-likestructure extending from the bottom or underside of step-plate 26,through the elongated bottom opening cut in the bathtub for placement ofbathtub insert 20, and secured to the bathroom floor or subfloor. It isthis adjustable housing 54, in conjunction with a support housing 56,that may provide the improved strength and adjustability afforded bybathtub insert 20. Rather than resting on the edges of the opening cutin the bathtub sidewall, the housings may be configured to rest on thefloor or subfloor. In one embodiment, the adjustable housing 54 may be afive-sided rectangular box-like structure. Its top panel may mate withor adhere to the bottom of step-plate 26. For added support, the toppanel may include transverse ribs incorporated or molded into the panel.These may aid in distributing any load or weight generally attributed toa user of the bathtub. Adjustable housing 54 may also have two sidepanels and two end panels with an open bottom panel. Exhaust ports forthe escape of air when the adjustable-housing is used in conjunctionwith the support-housing may be located in the end panels. Adjustablehousing 54 may fit over and enclose support housing 56 with a snugfriction fit, and may ultimately be sealed or secured in place tosupport housing 56. Air, which may be temporarily entrapped inadjustable housing 54, may escape through the exhaust ports.Alternatively, adjustable housing 54 may be secured to support housing56 in any suitable manner as will be apparent to one of ordinary skillin the art. For example, adjustable housing 54 may be secured to supporthousing 56 with a sealant or a fastener, such as a screw, a rod, a nutand bolt, a nail, a staple, a brad, or the like.

The support housing 56 may be a rectangular box-like structure similarto the adjustable housing 54. Support housing 56 may feature a pair ofside panels, a pair of end panels, and a bottom panel. The bottom panelmay be configured for attachment of the support housing 56 to thebathroom floor. An elastomeric sealant may be all that is necessary tofix the support-housing in place, but metal fasteners such as nails,staples, brads, etc., may also be used. Additional ports for the escapeof air compressed by the nesting of the support housing 56 within theadjustable housing 54 may be provided in the end panels.

The housings 54 and 56 may rest on the bathroom floor, for example, andmay not rest on the edges of the opening cut in the bathtub sidewall. Inthis way, bathtub insert 20 may permit direct weight to be placed onstep-plate 26, as it may be supported by the two housings. Once the twosupport housings 54 and 56 are properly fit to support the U-shaped boxstructure (the step-saddle 22 of insert 20), the housings may be securedto the floor. The housings may be secured to the floor in any suitablemanner as will be apparent to one of ordinary skill in the art. Forexample, the housings may be secured with a sealant or with a fastener.

During the installation process, the cavity formed by the removal of thecutout from the side of the tub may be sealed to prevent leakage intothe cavity between the tub walls. The cavity may be sealed by providinga plurality of waterproof sheets or pieces that are fashioned togetherto cover a section of the bathtub that has been cut and removed. Thewaterproof sheets may have an adhesive or other bonding agent on itssurface allowing it to adhere to the bathtub and/or a support housing.Such sheets may be a waterproof membrane similar to materials commonlyused for roofing applications. In an alternate version, expandable foamor other suitable materials may be sprayed or applied to the top of thesupport housings and in the voids in the sidewall on each side where thecutout has been made on the bathtub to provide a watertight seal. Anysuitable waterproofing material may be used as will be apparent to oneof ordinary skill in the art. For example, materials used to seal thefoundation of a house may be utilized to seal the exposed bathtubcavity. In still another version, a plurality of pieces of lumber,Styrofoam, or other suitable material may be cut to fit the open channeland the sidewalls of the bathtub and adhered or fastened to the sides ofthe bathtub and to the top of the support housings.

Once the section of the bathtub sidewall is removed, the bathtub insert20 may be sized to fit over the cut opening of the bathtub. Thisinstallation step may include cutting or trimming the sides and thebottom of the step-saddle 22 to fit over the section of the bathtubwhere the cutout has been made. Bathtub insert 20 may then be adhered toboth the bathtub and/or to the top of the sealed housings. Bathtubinsert 20 may fit into the cut opening in the bathtub without an overlapover the cut section of the tub. A bead of waterproof sealant or caulkmay be applied to the entire perimeter along the outer surface of theU-shaped box and the bathtub to provide a watertight barrier.

The installation of bathtub insert 20 may proceed generally as follows,although other methods are contemplated: An opening, generally U-shaped,may be cut in the sidewall of any suitable bathtub. In most instances, abuilt-in bathtub has three sides encased in or by the surrounding wallwith a bottom perimeter that is flush with the floor on the exposedside. It is the exposed side that is chosen for alteration with thebathtub insert 20 to make entry and departure easier. This opening, cutinto the exposed sidewall of the bathtub, may extend for a predeterminedlength within the sidewall and from the top of the sidewall and extendto a predetermined distance above the bottom of the bathtub. Thesepredetermined distances may be generally the dimensions of step-saddle22. Alternatively, these predetermined distances may be slightly smallerthan the dimensions of step-saddle 22 to allow for a secure andwatertight coupling.

More specifically, a template may be used to outline the portion of thebathtub sidewall to be removed for the insertion and placement ofbathtub insert 20. With the aid of the template, an outline may be drawnon the sidewall of the bathtub, and the defined section may be cut outand removed with the appropriate tools dictated by the composition ofthe bathtub. A pattern may then be made of the cutout area of thebathtub. The pattern outline may be transferred to the lips (notpictured) on bathtub insert 20 to mirror the cutout section of thebathtub, and the insert 20 may be cut to fit.

Bathtub insert 20, with all of its components, may then be positioned inthe cutout of the bathtub and aligned in the void of the cutout. Insert20 may then be removed to permit a support housing 56 to be secured tothe floor or subfloor. A support housing 56 may be secured to the floorin any suitable manner as will be apparent to one of ordinary skill inthe art. For example, a support housing 56 may be secured to a floorwith sealant or metal fasteners.

Bathtub insert 20 may be repositioned over the cutout opening with theunderside of step-plate 26 resting on an edge of the cutout void. Theadjustable housing 54 may be bonded to the support housing 56 with asuitable sealant. The entire perimeter of the step-saddle 22 may bejoined to the bathtub with a waterproof caulk or sealant to finish theplacement of bathtub insert 20. After allowing a suitable period of timefor the sealant and/or caulk to crosslink and cure, bathtub insert 20may be ready for use.

Referring to FIG. 14, another example of a bathtub insert 20 is shown.As shown in FIG. 14, bathtub insert 20 may include a handle 60. Handle60 may facilitate the opening and/or closing of door 24 and may beattached to door 24 in any suitable manner as will be apparent to one ofordinary skill in the art. For example, as shown in FIG. 14, handle 60may be fashioned as part of a bracket 62 that is secured to door 24 witha fastener 64. Fastener 64 may be, for example, a screw or a bolt.Alternatively, handle 60 may be fashioned as part of door 24 in such away that handle 60 and door 24 may be considered one integral piece. Astrike plate 66 may also be located on the surface of step-saddle 22.For example, FIG. 14 shows two strike plates 66. Such strike plates 66may serve to bond with a magnet 40 affixed to the inner surface of door24. In this way, magnets 40 and strike plates 66 may help to secure door24 in a closed position. In an alternate version, the strike plate 66may be concealed on the back side of step-saddle 22. Any suitable numberand configuration of handles is contemplated where, for example,multiple brackets may be provided to seal the door 24 at locations whereleakage is likely to occur. The handle and/or bracket may be configuredto translate vertically to lock and unlock the door or, alternatively,may be configured to latch and unlatch the door horizontally.

Referring to FIG. 15, another version of step-saddle 22 is shown. Inthis version, in contrast to the step-saddle 22 displayed in FIGS. 1-4and FIG. 11, step-saddle 22 has an open cavity 70. Such a cavity 70 mayrun underneath step-plate 26. Such a cavity 70 may provide for quickerinstallation of bathtub insert 20, as the insert 20 may be easier totrim to needed dimensions. The step-saddle 20 may be solid, have an opencavity, or any other suitable configuration.

FIG. 16 shows another example of a bathroom insert 20. In this example,a tread 80 may be applied to or fashioned as part of the top surface ofstep-plate 26. Tread 80 may serve to provide traction and/or friction tothe surface of step-plate 26. In this way, tread 80 may help prevent auser from slipping and/or falling while stepping on or over step-saddle22 and into or out of the bathtub. Tread 80 may be configured from anysuitable material as will be apparent to one of ordinary skill in theart. For example, tread 80 may be made of fabric, an absorbent material,an aesthetically pleasing material, a removable material, a materialwith a high coefficient of friction, or the like. Tread 80 may beapplied or fabricated as part of step-plate 26 in any suitable manner aswill be apparent to one of ordinary skill in the art. For example, tread80 may be molded into the bathtub insert 20 or may be glued or stapledonto step-plate 26 after the step-plate 26 has been formed, as anaftermarket material. The tread 80 may be permanently affixed tostep-plate 26 or it may be removable. The finish on tread 80 may be anysuitable finish as will be apparent to one of ordinary skill in the art.For example, tread 80 may have an etched surface.

In addition to or in place of magnets 40, a bathtub insert 20 mayinclude a latch to secure a closing of door 24. Referring to FIG. 17,one example of a latch 90 is shown. Latch 90 may be, for example,fashioned out of the same bracket 62 to which handle 60 may befashioned. Alternatively, latch 90 may be completely separate fromhandle 60. As shown in FIG. 17, when door 24 is in a closed position,latch 90 may be secured by a holder 92. FIG. 17 shows, for example,latch 90 being secured by two holders 92. Holder 92 may include a meansfor securing a latch 90. For example, FIG. 17 shows holder 92 asincluding a flange or lip 94 to secure latch 90. Holder 92 may besecured to step-saddle 22 in any suitable manner as will be apparent toone of ordinary skill in the art. For example, as shown in FIG. 17,holder 92 may be screwed into step-saddle 22. Alternatively, holder 92may be fashioned out of step-saddle 22 in such a way that holder 92 andstep-saddle 22 may be considered to be one piece. In addition, bracket62 may be moveably secured to door 24 in such a way that a user may lifthandle 60 (or if a handle 60 is not present, the bracket 62 itself) torelease latch 90 from holder 92 to move door 24 into an open position.Conversely, a user may push handle 60 (or if handle 60 is not present,the bracket 62 itself) down to secure latch 90 in holder 92 andtherefore, close and secure door 24. In another example, a user mayplace latch 90 in holder 92 to secure the closed door 24. Bracket 62 maybe moveably secured to door 24 to allow for such movement of latch 90 byscrewing or otherwise fastening bracket 62 to door 24 through a cutout96 in bracket 62.

Referring to FIG. 18, another example of a bathtub door 100 is shownthat may be associated with any suitable frame (not shown). As shown inFIG. 18, the bathtub door 100 may be associated with a handle 102.Handle 102 may facilitate the opening and/or closing of door 100 and maybe attached to door 100 in any suitable manner as will be apparent toone of ordinary skill in the art. For example, as shown in FIG. 18,handle 102 may be pivoted about a frame coupling 104 that attaches thehandle 102 to the frame. The handle 102 may be pivoted such that itengages a latch 106 that is secured to the frame. Referring to FIG. 18,the handle 102 is shown in the “closed” position, where the handle isengaged with the latch 106 to secure the door 100 against the frame and,thus, prevent the door 100 from opening.

In one version, the handle 100 further includes one or a plurality ofmagnets 108 that are associated with corresponding magnets embedded orotherwise associated with the frame (not shown). When in the “closedposition”, the magnets 108 in the handle 100 are configured to alignwith the corresponding frame magnets to secure the handle 100 in the“closed position”. In one version, to open the door the handle 100 mustbe pivoted away from a friction fit latch 106 and must also overcome thecoupling of the magnets 108. It will be appreciated that any suitablemagnet 108 arrangement is contemplated, where a second set of framemagnets (not shown) may be associated with the frame to secure thehandle 100 when in the “open position”. In this manner, the handle 100is configured to securely hold the door 100 against the frame to preventleakage, where the magnets 108 prevent the handle 100 from beingaccidentally opened.

Referring to FIG. 19, the door 100 includes a plurality of door magnets110 arranged around the periphery of the door 100 to secure the door 100to a frame or step saddle (not shown). The door magnets 110 areassociated with corresponding magnets imbedded in the frame such thatwhen the door 100 is in the “closed position” the magnetic couplingresists accidental opening of the door 100. The door magnets 110 may beembedded within the door, attached to the outside surface of the door,or otherwise configured to provide a secure attachment between the door100 and the frame. It will be appreciated that the door 100, handle 102,and latch 106 may be used with any suitable frame such as, for example,those described herein.

FIGS. 20-22 show an embodiment using a retrofit covering. FIG. 20 is anexploded view of one embodiment of a step plate 26, a support structurefor the bathtub insert having an adjustable house 54 and support housing56, and a retrofit covering. FIG. 21 is a front view of is a front viewof the assembled support structure, bathtub insert, and retrofitcovering shown in FIG. 20. FIG. 22 is a side view of the retrofitcovering of FIG. 20 shown prior to placement over the bathtub insert.

FIG. 23 illustrates one embodiment of a tub liner, bathtub insert, oroverlay 200 that can be used to cover all or a limited portion of abathtub 202. The overlay 200 can include a body 210 having a sidewall216 extending around the perimeter of a basin 214. As shown in FIG. 23,the sidewall 216 can include a top wall 212, an outer wall 218, and aninner wall 220. The top wall 212, the outer wall 218, and the inner wall220 can cooperate to define a channel or internal cavity 222 such thatthe body 210 can be partially or substantially hollow. The sidewall 216can further define an opening 215 in the top wall 212, the outer wall218, and the inner wall 220 that can facilitate ingress and egress froma bathtub. As shown in FIG. 23, the opening 215 can have a substantiallyU-shaped configuration defined by the sidewall 216, however, it will beappreciated that any suitable shape or configuration is contemplated.

The bathtub 202 can include a body 230 having a sidewall 232 extendingaround the perimeter of a basin 234. The sidewall 232 can include a topwall 235, an outer wall 236, and an inner wall 238. The sidewall 232 candefine an opening 204 in the top wall 235, the outer wall 236, and theinner wall 238 that can facilitate ingress and egress from a bathtub. Asshown, the opening 204 can have a substantially U-shaped configurationas defined by the sidewall 232, however, it will be appreciated that anysuitable shape or configuration is contemplated. The opening 204 can be,for example, formed by removing a portion of an existing bathtub 202,cutting away a portion of an existing bathtub 202, or providing abathtub manufactured with opening 204. It will be appreciated that anysuitable shape, number, or configuration of openings or cutouts can beprovided in accordance with embodiments described herein.

Still referring to FIG. 23, the overlay 200 can be configured forplacement over the bathtub 202 where the internal cavity 222 of theoverlay 200 can receive the sidewall 232 of the bathtub 202. The overlay200 and internal cavity 222 can be sized such that positioning theoverlay 200 over the bathtub 202 covers all or a limited portion of thetop wall 235, outer wall 236, and/or inner wall 238. As shown, theopening 208 can be aligned with the opening 204 when the overlay 200 ispositioned over the bathtub 202 to facilitate ingress and egress fromthe bathtub 202 by, for example, a disabled or geriatric user.

The opening 204 can be cut out of a standard bathtub 202, where theoverlay 200 can be operable to seal a cavity 240 in the body 230 that isdefined by the top wall 235, outer wall 236, and inner wall 238. Forexample, the opening 208 in the overlay can be defined by a perimeterwall 215, extending generally downward from the top wall 235, that cangenerally or substantially correspond to the shape of the opening 204.For example, after positioning the overlay 200 over the bathtub 204, aline of caulk or other suitable sealant or adhesive can be used topermanently or detachably couple the overlay 200 to the bathtub 202.Providing an overlay 200 in accordance with embodiments described hereincan allow for an existing bathtub 202 to be cut away to form an accessopening and then retrofit with an aesthetically pleasing overlay 200that retains the functionality of the access opening.

The opening can be a pre-formed feature of the bathtub 202, where theoverlay 200 can be used to change the aesthetic look of the bathtub 202while retaining the functional benefits of having an opening 208 and/orto provide additional features such as a door or an attachment point foraccessories. The overlay 200 can be a single pre-formed component asillustrated in FIG. 23 or, for example, can be configured from multiplecomponents (not shown) that are connected, fused, or otherwise engagedto cover all or a limited portion of the bathtub 202. The overlay 200can be configured for the engagement of accessories (not shown) and/orcan be integral with bath accessories such as a swivel seat, a grab bar,support bars, safety features, article holders, or the like. Overlay 200can have any suitable aesthetic look and can include functional and/orornamental surface effects including slip resistant regions. In oneembodiment (not shown), the body of the overlay can have a pivotallyattached door, such as the door illustrated in FIG. 14. Any suitablecover, door, capsule, and/or accessory can be used in association with,or can be integral with, the overlay 200. The overlay 200 can bepermanently attached to the bathtub 202 or, in an alternate embodiment,can be selectively removable from the bathtub 202. In one embodiment,the geometry of the internal cavity 222 of the overlay 202 cansubstantially correspond to the geometry of the sidewall 232 of thebathtub 202. However, it will be appreciated that the overlay 202 canhave any suitable shape and can be sized to universally accept bathtubshaving varying geometries and thicknesses. Overlay 200 can also includemodifications to the geometry of the original bathtub 202 where, forexample, overlay 200 can have a modified cavity or basin 214, a modifiedsidewall 218, or any other desirable shape or configuration designed foraesthetic and/or functional purposes.

FIG. 24 illustrates one embodiment of a tub liner, bathtub insert, oroverlay 300 that can be used to cover all or a limited portion of abathtub 302. The overlay can include a body 310 having a sidewall 316extending around the perimeter of a basin 314. As shown, the sidewall316 can include a top wall 312, an outer wall 318, and an inner wall320. The top wall 312, the outer wall 318, and the inner wall 320 cancooperate to define a channel or internal cavity 322 such that the body310 can be partially or substantially hollow. The sidewall 316 canfurther define an opening 308 in the top wall 312, the outer wall 318,and the inner wall 320 that can facilitate ingress and egress from abathtub. As shown, the opening 308 can have a substantially U-shapedconfiguration as defined by the sidewall 316, however, it will beappreciated that any suitable shape or configuration is contemplated. Asshown, a door 342 can be pivotally coupled with the body 310 of theoverlay 300. The door 342 can be selectively movable between an openposition and a closed position such that when the door 342 is in theclosed position the bathtub 302 can be used and filled in a traditionalmanner. Pivoting the door 342 to the open position can facilitateingress and egress from the bathtub. In this manner, the door 342 canprovide the benefits of a lowered entry point into the bathtub 302 whilestill preserving the use of a Tillable bathtub 302. It will beappreciated that the door 342 and/or overlay 300 can include anysuitable accessories (not shown) associated with the door 342 includinga latch, a handle, a locking member, or the like.

The bathtub 302 can include a body 330 having a sidewall 332 extendingaround the perimeter of a cavity or basin 334. The sidewall 332 caninclude a top wall 335, an outer wall 336, and an inner wall 338. Thesidewall 332 can define an opening 304 in the top wall 335, the outerwall 336, and the inner wall 338 that can facilitate ingress and egressfrom a bathtub. As shown, the opening 304 can have a substantiallyU-shaped configuration as defined by the sidewall 332. However, it willbe appreciated that any suitable shape or configuration is contemplated.The opening 304 can be, for example, formed by removing a portion of anexisting bathtub 302, cutting away a portion of an existing bathtub 302,or providing a bathtub manufactured with opening 304. It will beappreciated that any suitable shape, number, or configuration ofopenings or cutouts can be provided in accordance with embodimentsdescribed herein.

Still referring to FIG. 24, the overlay 300 can be configured forplacement over the bathtub 302, where the internal cavity 322 of theoverlay 300 can receive the sidewall 332 of the bathtub 302. The overlay300 and internal cavity 322 can be sized such that positioning theoverlay 300 over the bathtub 302 covers all or a limited portion of thetop wall 335, outer wall 336, and/or inner wall 338. As shown, theopening 308 can be aligned with the opening 304 when the overlay 300 ispositioned over the bathtub 302 to facilitate ingress and egress fromthe bathtub 302 by, for example, a disabled or geriatric user.

Where the opening 304 is cut out of a standard bathtub 302, the overlay300 can be operable to seal a cavity 340 in the body 330 that is definedby the top wall 335, outer wall 336, and inner wall 338. For example,the opening 308 in the overlay can be defined by a perimeter wall 315,extending generally downward from the top wall 335, that generally orsubstantially corresponds to the shape of the opening 304. Afterpositioning the overlay 300 over the bathtub 304, a line of caulk orother suitable sealant or adhesive can be used to permanently ordetachably couple the overlay 300 to the bathtub 302. Providing anoverlay 300 in accordance with embodiments described herein can allowfor an existing bathtub 302 to be cut away to form an access opening andthen retrofit with an aesthetically pleasing overlay 300 having a door342 that retains the functionality of the access opening with the use ofa fillable bathtub.

FIG. 25 illustrates one embodiment of a bathtub 402 that can include abody 430 having a sidewall 432 that together with a bottom surfacedefines a cavity or basin 434. The sidewall 432 can include a top wall435, an outer wall 436, and an inner wall 438. The sidewall 432 candefine an opening 404 in the top wall 435, the outer wall 436, and theinner wall 438 that can facilitate ingress and egress from the bathtub402. As shown, the opening 404 can have a substantially U-shapedconfiguration as defined by the sidewall 432, however, it will beappreciated that any suitable shape or configuration is contemplated.The opening 404 can be, for example, formed by removing a portion of anexisting bathtub 402, cutting away a portion of an existing bathtub 402,or providing a bathtub manufactured with opening 404. It will beappreciated that any suitable shape, number, or configuration ofopenings or cutouts can be provided in accordance with embodimentsdescribed herein.

FIG. 26 illustrates one embodiment of a tub liner, bathtub insert, oroverlay 400 that can be used to cover all or a limited portion of thebathtub 402 (FIG. 25). The overlay can include a body 410 that togetherwith a bottom surface defines a cavity or basin 414. As shown, thesidewall 416 can include a top wall 412, an outer wall 418, and an innerwall 420. The outer wall 418 can extend partially around the perimeterof the top wall 412 to accommodate a bathtub 402 that is positionedadjacent one or a plurality of walls. It will be appreciated that theoverlay 400 can have any suitable shape and/or configuration to coverall or a limited portion of bathtubs adjacent one or a plurality ofwalls. It will be appreciated that the overlay 400 can have any suitableshape or configuration to cover circular bathtubs, elliptical bathtubs,or bathtubs having any other suitable geometry or placement.

The sidewall 416 of the overlay 400 can further define an opening 408 inthe top wall 412, the outer wall 418, and the inner wall 420 that canfacilitate ingress and egress from the bathtub 402. As shown, theopening 408 can have a substantially U-shaped configuration that can bedefined by the sidewall 416, however, it will be appreciated that anysuitable shape or configuration is contemplated. Still referring to FIG.26, the overlay 400 can be configured for placement over the bathtub 402(FIG. 25), where the overlay 400 can be sized such that positioning theoverlay 400 over the bathtub 402 can cover all or a limited portion ofthe top wall 435, outer wall 436, and/or inner wall 438. As shown, theopening 408 can be aligned with the opening 404 when the overlay 400 ispositioned over the bathtub 402 to facilitate ingress and egress fromthe bathtub 402 by, for example, a disabled or geriatric user.

Where the opening 404 is cut out of a standard bathtub 402, the overlay400 can be operable to seal a cavity 440 in the body 430 that can bedefined by the top wall 435, outer wall 436, and inner wall 438. Forexample, the opening 408 in the overlay can have a perimeter wall 415that can generally or substantially correspond to the shape of theopening 404 such that the perimeter wall 415 can substantially close offthe cavity 440. After positioning the overlay 400 over the bathtub 404,a line of caulk or other suitable sealant or adhesive can be used topermanently or detachably couple the overlay 400 to the bathtub 402.Providing an overlay 400 in accordance with embodiments described hereincan allow for an existing bathtub 402 to be cut away to form an accessopening and then retrofit with an aesthetically pleasing overlay 400.

In some embodiments, a tub liner may comprise one or more additionalfeatures to assist a user, to ease the bathing experience for the user,or to otherwise aid a user or a caregiver. Such assistance features thatmay be integral, unitary, or otherwise coupled, to various tub linersmay include, for example, seats, ramps, steps, handrails, grippingstructures, benches, shower doors, and so forth. Some embodiments mayincorporate a plurality of additional assistance features, such as amolded seat, a grab bar, and a step, for example. Other embodiment mayinclude, for example, a molded seat and a ramp.

FIG. 27 illustrates one embodiment of a tub liner, bathtub insert, oroverlay 500 having an assistance feature 502 that can be used to coverall or a limited portion of the bathtub 504. The overlay can include abody 510 that together with a bottom surface 512 defines a cavity orbasin 514. A sidewall 516 can include a top wall 518, an outer wall 520,and an inner wall 522. The outer wall 520 can extend partially aroundthe perimeter of the top wall 518 to accommodate a bathtub 504 that ispositioned adjacent one or a plurality of walls. It will be appreciatedthat the overlay 500 can have any suitable shape and/or configuration tocover all or a limited portion of bathtubs adjacent one or a pluralityof walls. It will be appreciated that the overlay 500 can have anysuitable shape or configuration to cover circular bathtubs, ellipticalbathtubs, or bathtubs having any other suitable geometry or placement.

Similar to previously described embodiments, the sidewall 516 of theoverlay 500 can further define an opening 508 in the top wall 518, theouter wall 520, and the inner wall 522 that can facilitate ingress andegress from the bathtub 504. As shown, the opening 508 can have asubstantially U-shaped configuration that can be defined by the sidewall516, however, it will be appreciated that any suitable shape orconfiguration is contemplated.

The assistance feature 502 of the overlay 500 illustrated in FIG. 27 isa molded seat having a sitting surface 550. The sitting surface 550 maybe contoured to accommodate a user and may include, for example,protrusions 552 to assist the user with remaining properly positionedduring the bathing process. The protrusion 552 may be, for example,knurls, ridges, or a combination of both. The sitting surface 550 may besubstantially parallel to the bottom surface 512 of the overlay 500. Thesitting surface 550 may also be integral with a portion of the innerwall 522. A lip surface 558 may extend between the sitting surface 550and the top wall 518. As is to be appreciated, the lip surface 558 mayvary in size and shape depending on the placement of the sitting surface550 (i.e., the size of the seat). For example, if the sitting surface550 is positioned closer to the bottom surface 512, the lip surface 558will be larger and, if the lip surface 558 is large enough, may serviceas a backrest for a user. In some embodiments, the sitting surface 550is generally aligned with the top wall 518 such that there is no lipsurface 558. The assistance feature 502 may also comprise a verticalsurface 554 that joins the sitting surface 550 with the bottom surface512. The vertical surface 554 may be substantially perpendicular to thebottom surface 512 or may be slanted with respect to the bottom surface.In some embodiments, the vertical surface 554 may be a combination ofperpendicular and slanted surfaces. The vertical surface 554 may becontoured to receive a portion of a user's legs during the bathingprocess.

Still referring to FIG. 27, and similar to the embodiments describedabove, the overlay 500 can be configured for placement over the bathtub504, where the overlay 500 can be sized such that positioning theoverlay 500 over the bathtub 504 can cover all or a limited portion ofthe top wall 540, outer wall 542, and/or inner wall 544. As shown, theopening 508 can be aligned with an opening 546 of the bathtub 504 whenthe overlay 500 is positioned over the bathtub 504 to facilitate ingressand egress from the bathtub 504 by, for example, a disabled or geriatricuser. The user may sit on the sitting surface 550 during the bathingprocess.

In some embodiments, the overlay 500 may further comprise a door,blocking member, other type of cover. For example, a door similar todoor 24 (FIG. 1) may be utilized. The door 24 may be coupled to overlaymay be configured such that after a bather has entered the tub, a sealof the opening 508 may be provided. This door or blocking member may beaffixed proximate the opening 508 in any suitable manner such as, forexample, with a magnet, seal, or both. In another version, a capsule orcovering may selectively cover the opening 508. The capsule or coveringmay be hinged or may be a retrofit component that is placed over aportion of the overlay 500 to seal the opening 508.

FIG. 28 shows a cross-sectional side view along the longitudinal axis ofthe overlay 500 positioned over the bathtub 504. As illustrated, oncethe overlay 500 is positioned, a cavity 560 may be defined between theundersurface 551 of the sitting surface 550, the inner wall 544 of thebathtub, the bottom surface 550 of the bathtub 504, and the innersurface 555 of the vertical surface 554. In some embodiments, additionalstructural support may be used in the cavity 560 to add to thestructural rigidity of the seating surface 550. The structural supportmay be an additional piece or collection of pieces added into the cavity560 during installation, for example. The structural support may be amolded piece, a frame, a brace, a plurality of stacked or interlockingpieces, and so forth. In some embodiments, structural support may beunitary with, or otherwise coupled to, the overlay. The structuralsupport may be adjustable such that the overlay 500 may accommodate avariety of bathtub configurations.

FIG. 29 shows a cross-sectional side view taken along the longitudinalaxis of the overlay 500 which includes integral structural support 570.The structural support 570 may be unitary (e.g., molded) to theundersurface 551 of the sitting surface 550. The integral structuralsupport 570 may extend from the undersurface of the sitting surface 550and be dimensioned to communicate with the bottom surface 548 (FIG. 28)of the bathtub 504 once the overlay 500 is installed. In someembodiments, the structural support may be independent from the sittingsurface 550 and positioned between the undersurface of the sittingsurface 550 and the bottom surface 548 of the bathtub 504 duringinstallation of the overlay 500. In some embodiment, the structuralsupport is bonded to at least one of the undersurface of the sittingsurface 550 and the bottom surface 548 of the bathtub to reduce movementof the structural support.

In some embodiments, the structural support may not necessarily be incommunication with the bottom surface 548 of the bathtub 548. FIG. 30shows a cross-sectional side view of the overlay 500 having an integralstructural support 572. The structural support 572 comprises a pluralityof ridges extending downward from the undersurface 551 of the sittingsurface 550. The structural support 572 may comprise, for example, oneor more ridges 574 that run cross-wise and one or more ridges 576 thatrun lengthwise to create a ridge grid. In some embodiments, the ridgesmay be in an “X” pattern, or other suitable pattern that providesadditional structural rigidity to the sitting surface 550. The ridgegrid may serve to reduce the flexing of the sitting surface 550 duringuse.

FIG. 31 shows an overlay 600 having an assistance feature 602. FIG. 32shows a top view of the overlay 600 and FIG. 33 shows a cross-sectionalview of the overlay 600 taken along line 33-33. Referring now to FIGS.31-33, the overlay 600 can be configured for placement over the bathtub504 (FIG. 27), similar to the embodiments described above. The overlay600 may comprise a body 610 that together with a bottom surface 612defines a cavity or basin 614. A sidewall 616 can include a top wall618, an outer wall 620, and an inner wall 622. The sidewall 616 of theoverlay 600 can further define an opening 608 in the top wall 618, theouter wall 620, and the inner wall 622 that can facilitate ingress andegress from the bathtub 504.

The assistance feature 602 of the overlay 600 may be a molded seathaving a sitting surface 650. Similar to the sitting surface 550illustrated in FIG. 27, the sitting surface 650 may be contoured toaccommodate a user. The assistance feature 602 may have a front verticalsurface 654 and a side vertical surface 656. The side vertical surface656 may be offset and generally parallel with a portion of the innerwall 622. The side vertical surface 656 may be separated or offset fromthe inner wall 622 by a distance “d.” The separation between thevertical surface 656 and the inner wall 622 defines a pass-through 680for a shower curtain (not shown). The distance “d” may be for example,in the range of 0.25″ to 10″. As is to be appreciated, however, thedistance “d” may be any suitable distance. Relatively large overlays foruse with oversized bathtubs may have a relatively large distance “d”(i.e., greater than 10″), whereas overlays for use with small bathtubswill likely utilize a smaller distance “d.” The distance “d” may alsodecrease in the distance traveling from the top of the molded seat tothe bottom of the molded seat, such that the walls defining thepass-through 680 are downwardly tapering. In any event, the pass-through680 may be configured to allow a shower curtain to be selectively placedbetween the assistance feature 602 and the inner wall 622 during use ofthe bathtub.

In some embodiments, the overlay may incorporate assistance featuresthat provide ingress and egress support, such as handrails, grab bars,and so forth. FIG. 34 and FIG. 35 illustrate an overlay 700 having anintegrated grab bar 702. In both embodiments, the grab bar 702 iscoupled to the top wall 718, although this disclosure is not so limited.In some embodiments, for example, a grab bar may be coupled to, orintegrated with, a molded seat, an inner wall of the overlay, or one ormore sides of the opening 708. In any event, the grab bar may be grippedby the user to provide stability. In some embodiments, the grab bar maybe secured to the overlay 700. Referring to FIG. 34, the grab bar 702 ismounted to piers 720 molded into the overlay 700. The grab bar 702 maybe any suitable material such as stainless steel or plastic, forexample. The grab bar 702 illustrated in FIG. 35 is molded with the pier722 such that the grab bar is integral with the overlay 700.

FIG. 36 illustrates an overlay 800 having an assistance feature 802. Asillustrated, the assistance feature 802 is a ramp 860 having an outerramp portion 862 and an inner ramp portion 864. The ramp 860 ispositioned within the opening 808 of the overlay 800. The ramp 860 maybe molded into the overlay 800 or may be otherwise coupled to theoverlay 800. The ramp 860 may have protrusions (i.e., textured) toprovide traction during use. In various embodiments, the inclines of theouter and inner ramp portions 862, 864 may be substantially similar orthey may be different. For example, the outer ramp portion 864 may havea gentler incline than the inner ramp portion 862. Furthermore, thelength of the outer ramp portion 864 may be similar or different to thelength of the inner ramp portion 862. Once the overlay 800 is installedover a bathtub 804, a user may roll a wheelchair over the ramp 860 orthe user may use the opening 808 as a step-through.

As illustrated, the opening 846 is sized align with the overlay 800. Thebathtub 804 has a threshold 848. The ramp 864 may be sized to allow easeof ingress and egress over the threshold 848. While the assistancefeature 802 illustrated in FIG. 36 is a ramp, this disclosure is not solimited. In some embodiments, the assistance feature 802 may alsocomprise one or more steps. In some embodiments, the assistance feature802 may comprises a combination of a ramp and one or more steps.

FIG. 37 illustrates one embodiment of a tub liner, bathtub insert, oroverlay 900 having an assistance feature 902 that can be used to coverall or a limited portion of the bathtub 804 (FIG. 36). The assistancefeature 902 may be a ramp 964 that defines a laterally traversing track966. The track 966 may be configured to receive one or more doors 968.The doors 968 may be sliding doors, as illustrated, although thisdisclosure is not so limited. For example, a hinged door may be used insome implementation, with the ramp providing a threshold for one or morehinged doors. In some embodiments, the track 966 may comprise an innertrack and an outer track configured to receive a respective inner andouter sliding doors. The overlay 900 may also include one or more topwall tracks 970. Depending on the configuration of the bathtub 804, aplurality of top wall tracks 970 may be used. The top wall tracks 970may be molded to the overlay 900 and configured to receive a sidelight972. In some embodiments, the top wall tracks 970 may be coupled to thetop wall 918 of the overlay 900. Additional framing may be utilized tosecure the sliding doors and sidelights in place, such as top tracking974 and side tracking 976. Although not illustrated, it is to beappreciated, that the overlay 900 may also include additional assistancefeatures such as, for example, a molded seat and grab bars. Furthermore,in some embodiments of overlay 900, the assistance feature is a stepwhich incorporates the track 966.

FIG. 38 shows an overlay 980 having an assistance feature 982. Similarto embodiments described above, such as overlay 600 of FIG. 31, theoverlay 980 can be configured for placement over a bathtub 504 (FIG.27). The overlay 980 may comprise a body 984 that together with a bottomsurface 986 defines a cavity or basin 988. A sidewall 990 can include atop wall 992, an outer wall 994, and an inner wall 994. The assistancefeature 982 of the overlay 980 may be a molded seat having a sittingsurface 996. Similar to the sitting surface 550 illustrated in FIG. 27,the sitting surface 996 may be contoured to accommodate a user.

The assistance feature 982 may have a side vertical surface 998. Theside vertical surface 998 may be offset and generally parallel with aportion of the inner wall 994. The side vertical surface 998 may beseparated or offset from the inner wall 994 by a distance “f” Similar tooverlay 600 of FIG. 31, for example, the separation between the sidevertical surface 998 and the inner wall 994 defines a pass-through 1000for a shower curtain (not shown). The distance “d” may be for example,in the range of 0.25″ to 10″. As is to be appreciated, however, thedistance “f” may be any suitable distance. Relatively large overlays foruse with oversized bathtubs may have a relatively large distance “f”(i.e., greater than 10″), whereas overlays for use with small bathtubswill likely utilize a smaller distance “f” The distance “f” may alsodecrease in the distance traveling from the top of the molded seat tothe bottom of the molded seat, such that the walls defining thepass-through 1000 are downwardly tapering. In any event, thepass-through 1000 may be configured to allow a shower curtain to beselectively placed between the assistance feature 982 and the inner wall994 during use of the bathtub.

While the assistance feature of overlay 980 is shown as a seat, thisdisclosure is not so limited. Instead, additional or alternativeassistance features may be incorporated to, or molding unitary with, theoverlay 980. For example, in various embodiments, the overlay 980 maycomprise handrails, grab bars, and the like. The overlay 980 may also beconfigured to receive one or more sliding or hinged doors.

The embodiments presented in this disclosure are examples. Those skilledin the art can develop modifications and variants that do not departfrom the spirit and scope of the bathtub door addition. Thus, the scopeof the invention should be determined by appended claims and their legalequivalents, rather than by the examples given.

We claim:
 1. A method, comprising: cutting a first opening in a sidewallof a bathtub, the sidewall comprising a top wall, an inner wall, and anouter wall, wherein the first opening extends along a length of thesidewall and has a depth extending generally downward from the top wallof the sidewall; providing an overlay comprising an assistance feature,wherein the assistance feature is a tread, the overlay comprising a bodyconfigured to receive at least a portion of the bathtub, wherein thebody defines a channel and a second opening; and positioning the overlaysuch that the overlay substantially covers the entirety of the top wall,substantially the entirety of the inner wall, and substantially theentirety of the outer wall of the sidewall, such that substantially theentirety of the top wall, the entirety of the inner wall, and theentirety of the outer wall is no longer visible, and the sidewall ispositioned within the channel defined by the body of the overlay,wherein the first opening is aligned with the second opening, whereinthe step of positioning the overlay comprises substantially covering theentirety of the bathtub such that the bathtub is no longer visible. 2.The method of claim 1, wherein the tread is a traction plate.
 3. Themethod of claim 1, wherein the tread is constructed from a materialhaving a high coefficient of friction.
 4. The method of claim 1, whereinthe tread is positioned on the second opening of the overlay.
 5. Themethod of claim 1, wherein the tread is positioned on a step plate ofthe second opening of the overlay.
 6. The method of claim 1, wherein thetread is molded into the overlay.
 7. The method of claim 1, wherein thetread is affixed to the overlay.
 8. A method, comprising: cutting afirst opening in a sidewall of a bathtub, the sidewall comprising a topwall, an inner wall, and an outer wall, wherein the first openingextends along a length of the sidewall and has a depth extendinggenerally downward from the top wall of the sidewall; providing anoverlay comprising an assistance feature, wherein the assistance featureis a capsule, the overlay comprising a body configured to receive atleast a portion of the bathtub, wherein the body defines a channel and asecond opening, wherein the capsule is selectively removable from thesecond opening; and positioning the overlay such that the overlaysubstantially covers the entirety of the top wall, substantially theentirety of the inner wall, and substantially the entirety of the outerwall of the sidewall, such that substantially the entirety of the topwall, the entirety of the inner wall, and the entirety of the outer wallis no longer visible, and the sidewall is positioned within the channeldefined by the body of the overlay, wherein the first opening is alignedwith the second opening, wherein the step of positioning the overlaycomprises substantially covering the entirety of the bathtub such thatthe bathtub is no longer visible.
 9. The method of claim 8, wherein thecapsule substantially seals the bathtub when the capsule is positionedwithin the second opening of the overlay.
 10. The method of claim 8,wherein the capsule is a blocking member.
 11. The method of claim 8,further comprising a seal positioned between the second opening of theoverlay and the capsule.
 12. The method of claim 8, wherein the capsuleis lowered into the second opening of the overlay.
 13. The method ofclaim 8, further comprising the step of positioning the capsule withinthe second opening of the overlay in a closed position and removing thecapsule from the second opening of the overlay in an open position. 14.A method, comprising: cutting a first opening in a sidewall of abathtub, the sidewall comprising a top wall, an inner wall, and an outerwall, wherein the first opening extends along a length of the sidewalland has a depth extending generally downward from the top wall of thesidewall; providing an overlay comprising an assistance feature, theassistance feature being a door, the overlay comprising a bodyconfigured to receive at least a portion of the bathtub, wherein thebody defines a channel and a second opening; and positioning the overlaysuch that the overlay substantially covers the entirety of the top wall,substantially the entirety of the inner wall, and substantially theentirety of the outer wall of the sidewall, such that substantially theentirety of the top wall, the entirety of the inner wall, and theentirety of the outer wall is no longer visible, and the sidewall ispositioned within the channel defined by the body of the overlay,wherein the first opening is aligned with the second opening, whereinthe step of positioning the overlay comprises substantially covering theentirety of the bathtub such that the bathtub is no longer visible. 15.The method of claim 14, wherein the door substantially seals the bathtubwhen the door is positioned within the second opening of the overlay.16. The method of claim 14, wherein the door is coupled to the overlaywith a hinge.
 17. The method of claim 14, further comprising a sealpositioned between the second opening of the overlay and the door. 18.The method of claim 14, wherein the door has an open position tofacilitate ingress and egress from the bathtub and a closed position tosubstantially seal the bathtub.
 19. The method of claim 18, wherein thedoor includes a locking feature to secure the door in the closedposition.
 20. The method of claim 18, wherein the door includes a handleto facilitate transitioning the door from the open position to theclosed position.